Improvement in floor-clamps



UNITED STATES PATENT OEEICE.

JOHN L. BRYANT, OF LOGANSPORT, INDIANA.

IMPROVEMENT IN FLOOR-CLAMPS.

Speciication forming part of Letters Patent No. 49,852, dated September 12, 1665.

To all whom it may concern:

Be it known that I, JOHN L. BRYANT, of the city of Logansport, county of Cass, and State otIndiana, have invented a new and useful Power-Clamp for Clamping Joints in Laying Floors or in Keying Door-Sash, ctc.; and I do hereby declare that the following is a full aud exact description thereof, reference being had to the accompanying` drawings, making` part of this specification, in which- Figure l is a side elevation; Fig. 2, a bottoni plan.

The nature of my invention consists in so constructing a power-clamp by means ol an inclined plane or planes and lugs or jaws that it can be readily attached to joists in laying tloors or to trestles (or horses) in shop-work, to be used for any purpose i'or which workers in wood use clamps to insure good and closelylittingjoints, and for any other purpose wherein a clamp that can be readily attached or detached may beapplied.

To enable others skilled in the art to make and use vmy invention, I will proceed to describe its construction and operation.

I construct my power-clamp in the form as shown in Fig. 1, having ratchet B, pinion E,

pawl C, and lever A. In order to attach it tok joist, trestle, or horse, I provide jaws or lugs F F, Fig. 2, held in position by bolts or rivets TT, Figs. l and 2, which pass through the slot N, Fig. 2, or other fastenings in such manner that thejaws, lugs, or other fastenings can be adjusted in the inclined iiangesH H, Fig. 2, to Iit tightly on any thickness of timber, thus forming a complete and permanent clutch which may be readily detached by the blow ot' a hammer on the extreme end opposite the vertex. ofthe inclined plane.

What I claim as my invention, and desire to secure by Letters Patent of the United States, 

